Lingual bar



L. s. WOLFE. LINGUAL BAR. APPLICATION FILED SEPT; 9, 192].

Patented Oct. 311, 1922;

met. all,

tripe.

LEON S. WOLFE, OF WASHING-TON, DISTRICT OF COLUIVEBIA, ASSIGNOR TO THE If. Ill. HEY COMPANY, OF HABETEGRD, CONNECTICUT.

LENG-UAL BAR.

Application filed Septemiierii, 1921. Serial No. 499,535.

To all whom it way concern;

Be it lniown that ll LEON El. Worms, a citizen the United States, and a resident oi? the city t i l ashingtoin in the District 0? (.olumbia, have im'ented certain new and useful improvements in Lingual Bars. ol" which the following is a specification.

My invention relates to lingual bars tor artificial dentures.

and retained in the vulcanite p ;u-tioi:is ot the denture; and consists in giving to said portions of the lingual bars a certain conligurm tion and variable cross section, the sin-traces having; projections thereon whereby the said portions of the bars are most ti'iail and elliciently retained in place Within the portions oi" the denture made of vulmii'iite or other similar material.

Referring to the drawings:

Figure 1 is a plan view of my bar.

Figure is a lateral ele'mtion ot the retaining ends or surfaces.

Figures 3. l: and are lateral elevations ol? ditl erent retaining: surtaces provideiil in the end of the bar.

The lingual bar ll) is oi the 1 sual substantially lenticular or flattened oral cross section, having the usual curved portion ll. from, which extend distall the arnr portions l2. which are I lOViClQCl with retaining; ends 13 adapted to be embedded and r 5ilaine l in the vulcanite saddle portion ot the denture (not shown). in the modification illustrated in lligs. l. and 2, the ends 13. for example, are each provided with serrations or teeth i l projecting outwardly and mosiallt from the ed go of the end 13. The points 14-. appear on two opposite edges of the ends l3 oi the bar the two su'rtacer-i lying between these being; formed to have trai'isverse serrations forming; 1lcp1'essions l5 and elevations l6. it ma occasionally be desirable for considerations of space. etc, to alter the position ol" the points ll, and these may be bent laterally, or'otherwise, with any suitable tool such as a pair of pliers; and such bending will not be detrimental, but Will give added strength to the joint between the and particularly to the portions thereof intended to be embedded retaining ends otthe bar and the saddle portions.

.ln the modification of Pi S the retaining portions consist of a series of small pyra mids 2l preiterably truncated, so as to have small apical surfaces 22, the seri s 0i; pyltu midsextending over the entire lateral surfaces of the retaining ends, and the outer row thereol iliorining the edge projections W' l thus be seen that with my invention, 1. the retention of the lingual bar in the saddle e0 mrtion is assured vithout in any way sacrificing the strength of the bar. i

Fig. t shows a 01111 of construction in \vhieh the retaining surface .13 of the bar is provided with an opening, as at and in which the lon itudinal edges of the opening are provided ith serrations 25. In the moditica 'on of Fig. 5 the retaining ei'nl is 1 Q each bifurcation 26 being provided with edge serrations 2'. The lateral surfaces between the cc o serrations ol' both i these terms ay beprovided with additional rctainiu siuraces such as the transverse serrations l5, it) of Fig. 2 or the truncated pyramids oi" 8, or the like.

Having "fully described my invention, What .i claim is l. A lingual bar, the ends thereof being provided with a retaining sur'lace compri ing a plurality at niesiall v projecting serrations.

2. A. lingual bar; the ends thereof beii provided with a retaining surface comprising a pliin'ality 0t inesially projecting edge serrations.

3. A lingual bar, the ends thereof being provided with retaining surfaces compris mg a plurality oi inesially projecting serra tions and transverse serrations.

e1. Alingual bar, the ends of which are provided with retaining surfaces, said sur [aces being provided with an opening and with projecting; edge serrations.

lln a lingual bar, bifurcated retaining ends. the bifurcations being provided with a plurality of projecting edge serrations. 

